Gas-engine.



No 863,284 PATENTED AUG. 13, 1907.

H. STOLTENBERG;

GAS ENGINE. APPLICATION FILED NOV. 11, 1905.

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No. 863,234. PATENTED AUG. 13, 1907.

-H. STOLTENBERG.

GAS ENGINE.

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UNITED STATLES PATENT nron.

HENRY STOLTENBERG, OF DAVENPORT, IOWA, ASSIGNOR TO WHITE LILY WASHER COMPANY, OF DAVENPORT, IOWA, A CORPORATION OF IOWA.

GAS-ENGINE.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Original application filed June 12, 1905, Serial No. 264,866. Divided and this application filed November 17, 1905. Serial No. 287,853-

To all whom it may concern:

Be it known that I, HENRY STQLTENBERG, a citizen of the United States, and a resident of Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Gas-Engines, of which the following is a full, clear, and exact description.

My invention relates to gas-engines, and its object is to provide suitable mechanism whereby the speed of said engine may be mechanically controlled by automatically opening the exhaust-valve when the speed becomes too great for practical purposes or too high for safety. This I accomplish by the means hereinafter fully described and as particularly pointed out in the claims.

In the drawings:Figure 1 is a side elevation of a gas engine embodying my invention. Fig. 2 is a transverse vertical section of the upper part of the same. Fig. 3 is a plan view thereof.

Reference being had to the drawings A represents a suitable vertically disposed cylinder which is supported by an open base O, in the side walls of the lower portion of which latter the drive-shaft D is journaled. This shaft is actuated in the usual manner by a pitman a, which is connected at its upper end to the piston head I; in the cylinder A and at its lower end to the crank c of said shaft. The head E for the upper closed end of the cylinder may be either cast in one piece therewith, or may consist of a suitable plate bolted or otherwise secured thereto. In either event said head is provided with an inlet port d and an exhaust port e, which are, preferably, located diametrically opposite each other, and is provided with a suitable sparker I.

The spindle g of the exhaust valve G is longer than that of valve F, and moves in suitable bearings and its upper end is pivotally connected to the contiguous ends of the walking-beam L by a pivot bolt, whose ends are journaled in slotted bearings in the ends of the corresponding parallel links composing said beam, thus permitting the spindle to reciprocate vertically. Between the top of the L-shaped pipe section and the walking-beam, spindle g is surrounded by a coil expansion spring M, which operates to keep the exhaust port e normally closed. The walking-beam is fulcrumed mediate its ends to a post m, which is secured to the head E, preferably, by one of the bolts securing said head to the cylinder, and the outer end of said beam is connected, by a suitably bent vertically disposed connecting-rod N, to the uppermost extremity of a Z-shaped lever O.

The ends of the drive-shaft D, extend through their hearings in the base G of the cylinder, A, and one end with a pinion 2, which meshes with a larger gear 3, whose shaft 4 is journaled in bearings in the base to the side of the drive-shaft, opposite that where lever O is fulcrumcd. Shaft 4 is provided with a cam 5, which is located in the same vertical plane as the upper horizontal part of the lever O, and as said shaft revolves, said cam comes in contact with the lower edge of said horizontal part, and, owing to gear 3 being twice the size of pinion 2, hits said lever and causes the exhaustvalve to open once every two revolutions of the driveshaft.

The vertical portion of the lever O has, in the edge nearest cam 5, a downwardly extending undercut tooth 6, which is engaged by the sharp point of a detent 7, which latter is pivoted at its lower end to the base O, at a point below the periphery of gear 3, and is engaged by a spring 8, that keeps it normally in the position shown in Fig. 1 of the drawings. Extending transaxially through a suitable opening in shaft 4, preferably, between cam 5 and gear 3, is a reciprocal rod 9, on one end of which a weight 10 is secured that has a transverse finger 11 projecting from it in a direc tion opposite gear 3. Surrounding the portion of said rod extending diametrically opposite said weight, is a coil expansion spring 13, which is compressed against shaft 4 by a gagenut 12. When the engine gets to going too fast, the centrifugal force of weight 10 moves it away from shaft 4, and causes it to'strike the adjacent edge of the detent, just about the time the cam 5 is permitting the lever O to lower to its original position, and forces the point of said detent under the tooth (5, and thus keeps the exhaust port open while gear 3 is making one revolution, or while the drive-gear is making two revolutions and the piston two strokes, thereby preventing the explosion in the cylinder and slowing up the engine in consequence. This action of the governing devices repeats itself with every revolution of gear 3 until the speed of the engine is reduced to normal. The speed of the engine can be changed, as desired, by manipulating gage-nut 13, so as to increase or diminish the resistance of spring 12, to the centrifu gal force necessary to move weight 10 outwards and operate the detent.

The subject-matter of this application is a division of an application now pending in the United States Patent Oflice in my name, filed June 12, 1905, Serial Number 264,866 for improved gas engine.

What I claim as new isz- 1. A gas-engine comprising a cylinder having inlet and exhaust valves in its closed end, a suitable lever, an automatically returnable rocking-beam operating said exhaust valve, a rod connecting said lever and beam, a shaft actuated by and revolving at one-half the speed of the drive-shaft of the engine, a detent adapted to engage a niche in the vertical portion of said lever and retain the same in a raised position during two cycles of the driveshaft, and centrifugally actuated means carried by said first mentioned shaft tothrow said detent into engagement with said lever.

2. A gas-engine comprising a cylinder having inlet and exhaust valves in its closed end, a Z-shaped lever, an automatically returnable rocking-beam operating said exhaustwalve, a rod connecting said lever and beam, a shaft actuated by and revolving at one-half the speed of the drive-shaft of the engine, a detent adapted to engage a niche in the vertical portion of said lever and retain the same in a raised position during two cycles of the driveshaft, a rod extended through a transverse opening in said first mentioned shaft, a weight on one end thereof and a spring on the other end for retaining said rod in its n0rmal position, which weight is moved by centrifugal force and is adapted to operatn'ely engage said detent.

A gas engine comprising a cylinder having inlet and exhaust ports in its closed end, valves therefor, a suitable lever, automatically returnable means connecting said lever to the exhaust valve, a shaft actuated by and revolving at one-half the speed of the drive-shaft of said engine, a detent adapted to hold said lever in a raised position, and a rod extended through a suitable transverse opening in said first mentioned shaft, a Weight on one end thereof, and a spring on the other for retaining said rod in normal position, which weight is moved by the centrifugal force and is adapted to operatively engage said detent as and for the purpose set-forth.

4. A gas engine comprising a cylinder having inlet and exhaust ports in its closed end, valves therefor, a Z-shapecl lever, automatically returnable means connecting said lever to the exhaust valve, a shaft actuated by and re part of the head and having opposite sides flattened said engine, a detent adapted to engage a niche in the vertical portion of said lever, and a rod extended through a suit able transverse opening in said first mentioned shaft, a Weight on one end thereof, and a spring on the other for retaining said rod in normal position which weight is moved by the centrifugal force and is adapted to operatively engage said detent as and for the purpose setforth.

in testimony whereof I have hereunto set my hand this 9th day of November, A. D,, 1905.

HENRY STOLTENBERG.

Witnesses:

I. M. NELSON, EUGENIA COOLING. 

